(1) Tested Strong Sylvania 6DW4B Tube Date Code KUA Half Wave Rectifier

(1) Tested Strong RCA 6DW4B Tube Date Code CL Half Wave Rectifier

(1) Tested Strong Compactron 6DW4B Tube Half Wave Rectifier Tube

(1) Tested Strong Raytheon 6DW4B Tube Date Code W04 Half Wave Rectifier

(1) Tested Very Strong RCA 1J3 Tube Date Code MP Half Wave Rectifier Tube

(1) Tested Strong RCA 17D4 Tube Code NG Half Wave Rectifier Tube

(1) Tested RCA 6CL3 Tube Date Code 69-09 RCA 6CL3 Half Wave Rectifier

(1) Tested Very Strong RCA 6AF3 Tube with Box Date Code ND Half Wave Rectifier